CVE-2020-11498
Slack Nebula through 1.1.0 contains a relative path vulnerability that allows a low-privileged attacker to execute code in the context of the root user via tun_darwin.go or tun_windows.go.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Slack Nebula through 1.1.0 contains a relative path vulnerability that allows a low-privileged attacker to execute code in the context of the root user via tun_darwin.go or tun_windows.go. A user can also use Nebula to execute arbitrary code in the user's own context, e.g., for user-level persistence or to bypass security controls. NOTE: the vendor states that this "requires a high degree of access and other preconditions that are tough to achieve."
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.40% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- slack/nebula
- Source
- cve@mitre.org
References
- http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosureExploit, Third Party Advisory
- https://github.com/slackhq/nebula/pull/191Patch, Third Party Advisory
- http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosureExploit, Third Party Advisory
- https://github.com/slackhq/nebula/pull/191Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.